| Li Hao,Ning Xianying,Cheng Lan,Lei Ziqiao,Zheng Chuansheng,Yu Jianming,Wu Hongying.Evaluation of low-dose CT protocol of novel coronavirus pneumonia based on infection prevention and control[J].Chinese Journal of Radiological Medicine and Protection,2020,40(10):794-797 |
| Evaluation of low-dose CT protocol of novel coronavirus pneumonia based on infection prevention and control |
| Received:March 12, 2020 |
| DOI：10.3760/cma.j.issn.0254-5098.2020.10.011 |
| KeyWords:COVID-19 Infection prevention and control Low dose CT computed tomography Image quality |
| FundProject: |
| Author Name | Affiliation | E-mail | | Li Hao | Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China | | | Ning Xianying | Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China | | | Cheng Lan | Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China | | | Lei Ziqiao | Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China | | | Zheng Chuansheng | Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China | | | Yu Jianming | Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China | | | Wu Hongying | Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China | cathyhyw@126.com |
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| Abstract:: |
| Objective To explore a low dose CT scanning method on novel coronavirus (COVID-19) pneumonia based on infection prevention and control. Methods A total of 140 patients with confirmed novel coronavirus pneumonia in Xiehe hospital from January 20, 2020 to February 28, 2020 were undertaken CT scan and divided into low dose group and conventional dose group. The patients in low dose group(120 kV, 31 mAs) consisted of mild type(51), severe type(15) and critically ill type(4); and those in conventional dose group(120 kv, adaptive milliampere second) consisted of mild type(48), severe type(17) and critically ill type(5). The effective radiation dose, SNR and CNR of CT scan were compared between two groups. A senior and a middle radiologist made the image subjective quality scores, respectively. Results The effective dose in low dose group was lower than that of conventional dose group(t=-48.343,P<0.05). There was no significant difference in SNR and CNR between two groups(P>0.05 ). For severe and critically ill patients, the score in low dose group was significantly lower than that in conventional dose group(t=-2.781,P<0.05 ). There was no significant difference in scores between two groups for mild patients(P>0.05 ). Conclusions Low-dose CT scanning could meet the image quality needs for patients with COVID-19 and meanwhile significantly reduce the radiation dose. |
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